Self-filling fountain pen



1934. J. M, BURROUGHS SELF FILLING FOUNTAIN PEN Filed July 30, 1932' gmwm JM W/O AS Patented Jan. 16, 1934 UNITED STATES PATENT OFFICE 1 Claim.

The present invention relates to self-filling fountain pens.

An object of this invention is to provide in a fountain pen means operable exteriorly of the pen for filling the reservoir or bladder.

Another object of this invention is to provide a longitudinally movable member for deflating the bladder and means for returning the membar to inoperative position.

The above and various other objects and advantages of this invention will in part be described in and in part be understood from the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawing, wherein:

Figure 1 is a longitudinal section partly in detail of a device constructed according to the preferred embodiment of this invention;

Figure 2 is a sectional view taken on the line 2--2 of Figure 1, and

Figure 3 is a transverse sectional view taken on the line 33 of Figure 1.

Referring to the drawing wherein like numerals of reference designate corresponding parts throughout the several views, the numeral 10 designates generally the shell of a fountain pen of any desired size and capacity which is provided at one end with a pen point 13 which is positioned in a plug or end member 11.

A bladder or bulb 12 is secured to the inner end of the plug 11 and is loosely positioned in the shell or casing 10. The opposite end 14 of the casing 10 is preferably closed.

In order to deflate or compress the bladder 12, there is mounted within the casing 10 a deflating member generally designated as 15 which comprises an elongated strip of metal which extends longitudinally of the casing 10 and contacts with the periphery of the bladder 12. The deflating .member 15 adjacent the outer end portion there of is preferably bent inwardly, as at 16, and the 1 outer end thereof is secured to a round pin or bar 17, this pin 17 constituting a piston which extends outwardly through an aperture 18 in the end 14.

A head or knob 19 is secured to the outer end of the piston or pin 1'7, this knob being such as to be grasped between the fingers so as to pull the piston 17 outwardly and axially of the casing 10. A lever 20 is mounted within the casing 10 and swingingly secured to an annular member 21, this annular member 21 being secured to the inner wall of the casing 10 and held against longitudinal movement by means of an annular groove or shoulder 22. The opposite end of the lever 20 is pivotally secured, as at 23, to the deflating member 15 being secured to the deflator 15 intermediate the opposite ends thereof so that when the piston 1'? is moved outwardly and longitudinally of the casing 10, the lever 20 will swing inwardly on the securing member 21 and coactively swing the deflating member 15 inwardly so as to compress or deflate the bladder 12.

A spring 24 is positioned about the piston 17 and engages at one end against the inner face of the end 14, the opposite end of the spring 24 engaging against the outer end of the deflator 15 so as to constantly urge the deflator 15 inwardly and into inoperative position.

It will be obvious from the foregoing that the depressing bar or lever 20 may be concealed within the casing 10 and that the knob or grasping member 19 may be of a size equal to the diameter of the casing 10 if desired.

In the operation of this device, the knob 19 is grasped between the fingers and the pen point 13 projected into a supply of ink whereupon the knob 19 is pulled outwardly, thereby coactively moving the deflator 19 against the tension of the spring 24 and causing the lever 20 to swing inwardly on the securing member 21. The inward movement of the lever 20 will carry therewith the deflator 15 which upon inward movement thereof will depress the bladder or bulb 12. When the knob 19 is released, the spring 24 will move the deflator 15 back into inoperative position so that the bulb 12 may resume its'normal shape and at the same time drawing in ink through the forward end of the plug member 11 and between the pen point 13 and the feeding member 25.

' It is, of course, understood that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claim.

I claim:

In a fountain pen including a cylindrical casing and a compressible bladder, an elongated deflator mounted in said casing and extending longitudinally of said bladder, said deflator having an inclined outer end portion, a pin secured to one end of said deflator and extending outwardly through one end of the casing, means carried by the casing and engaging the deflator for moving the deflator laterally coactively with the longitudinal movement thereof, said means including a lever pivotally secured at one end to said deflator, said casing having an annular groove on the interior thereof and an annular securing means seating in said groove for rockably securing the opposite end of said lever to said casing, said securing means having a flat portion to receive an end of said lever.

JAMES M. BURROUGHS. 

